Paper bag



2 Sheets-Sheet l.

Inventar: ZM-f Patented Oct. 30, 1888.

PAPER BAG.

F. W. LEINBAGH.

(No Model.)

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F. W. LEINBAOH.

PAPER BAG. No. 391,804. Patented 001;. 30, 1888.

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FELIX XV. LElNBAC-H, OF BETHLEHEM, PENNSYLVANIA.

PAPER BAG.

SPECIFICATION forming part of Letters Patent No. 391,80 dated October30, 1888.

Application filed March 12, 1586 Serial No. 194,961.

To all whom it may concern:

Be it known that I, FELIX W. LEINBAGH, of Bethlehem, Pennsylvania, haveinvented an Improvement in Paper Bags, of which the followingdescription and claim constitute the specification, and which isillustrated by the accompanying two sheets of drawings.

Thisinvention is an improvement in squarebottom paper-bags having inwardbellows folds.

Figure l is a view of alength of tuckedpaper tube. Fig. 2 is across-section of the same. Fig. 3 is a view of a bag-blank which is madeby cutting four slits in the lower end of the tucked tube of Figs. 1 and2 and then opening out and folding down sundry of the flaps thus formed.Fig. 4 is a view of the blank of Fig. 3 with its two side flaps foldedback into place and with paste applied to the presented surfaces of theother two flaps. Fig. 5 is a view of the blank of Fig. at with one ofthe latter flaps folded and pasted down in place; and Fig. 6 is a viewof the same with both those flaps thus folded and thus pasted and thebag thus completed. Fig. 7 is a perspective view of the bag of Fig. 6opened out for use, but having its bottom upward in order to show thefinal appearance thereof. Fig. 8 is a view identical with Fig. 8. Fig. 9is a view of the blank of Fig. 8 with its two side flaps folded backinto place and with paste applied to the presented surfaces of itsothcrtwo flaps. Fig. 10 is a view of the blank of Fig. 9 with one of thelatter flaps folded and pasted down in place; and Fig. 11 is a view ofthe same with both flaps thus folded and pasted and the bag thuscompleted. Fig. 12 is aperspective view of the bag of Fig. 11 opened outfor use, but with the bottom upward to better show its construction.

To makethe bag of Fig. 6, a length of tuckedpaper tube like that of Fig.1 is taken and longitudinal slits are out in its outer bends at thepoints indicated by the short lines a a a a in Fig. 2. These slitsterminate at the points indicated by the short lines I) b in Fig. 1.Then the bottom of the tube is opened out and the upper wall thereof isfolded back on the (No model.)

transverse dotted line 00 0c of Fig. 1. That op eration causes theformation of the blank of Fig. 3, having the four flaps A, B, O, and D.Then the flaps A and B are folded down on lines coincident with thesides of the flaps O and D, and after paste has been applied to thelatter, as shown in Fig. 4, the flaps O and D are successively foldeddown on lines coincident with the sides of the flaps A. and B.

The bag of Fig. 11 is made in all respects like that of Fig. 6, exceptthat the folds O and D in it are folded, finally, down upon the dottedlines 3 y and z 2, respectively, instead of upon lines coincident withthe sides of the flaps A and B. This latter method of folding surelycloses the minute openings which otherwise are apt to exist at the fourcorners of the bottom of the completed article. The bag of Fig. 11 istherefore better than the bag of Fig. 6 in that single respect, whilethe lastmentioned bag is better than the other in respect that the widthof its bottom is coextensive with the thickness of the opened bag,whereas the width of the bottom of the bag of Fig. 11 is somewhat lessthan the thickness of that bag when opened out.

The merit of this invention as compared with prior forms ofsquare-bottom bags resides in the ease with which its bottom may be madeand in the uniform distribution of paper throughout all parts of thatbottom.

1 do notherein claim that process of making a squarebottom paper bagwhich I describe, because I do claim it in my application, No. 284,980,for Letters Patent of the United States of America.

I claim as my invention- A square-bottom paper bag two sides of whichare inwardly tucked and the four sides of which are longitudinallysevered at their junctions to produce the four flaps A, B, O, and D,which are folded together to produce the bottom of the bag, allsubstantially as described.

FELIX \V. LEINBAOH.

Witnesses:

ALBERT H. WALKER, WILLARD EDDY.

